I wanted to go back and see how I felt about this issue last year...still the same. Cynthia Tinapple gave me a plug about my "rules" here.
Something else to be aware of...this statement is on the NPCG's website:
"We respect the right of our fellow artists to profit from their creative work and teachings. Polymer clay artists value originality and expertise and respect the unique work of other artists and teachers. When learning a new technique from another artist or teacher, polymer clay artists endeavor to integrate and transform the technique into their personal style, while providing full attribution to the original artist. "
I think we need to bring up the topic again and again, no matter how complex...because it opens our eyes to all sides of the issue and makes us think., which is always a good thing.